Three-leaf folder



FIG. 1 is a front view of the three-leaf folder;

FIG. 2 is a rear view of the three-leaf folder;

FIG. 3 is a front view of the three-leaf folder partially folded; and,

FIG. 4 is a perspective view of the three-leaf folder partially opened. 

The ornamental design for a three-leaf folder, as shown. 